Four-swingable-wheel push-pull luggage



This application is related to U.S. patent application Ser. No. 29/272,414 filed on Feb. 8, 2007 and U.S. patent application Ser. No. 29/273,853 filed on Mar. 15, 2007.

FIG. 1 is a side view of the four-swingable-wheel push-pull luggage, which is tilted backward when placed on a flat surface. A user holding a handle of the four-swingable-wheel push-pull luggage, shown in broken lines, is merely illustrative and does not form any part of the claimed design.

FIG. 2 is a bottom view of the four-swingable-wheel push-pull luggage with a pair of front swingable wheels and a pair of rear swingable wheels.

FIG. 3 is a diagonally-upward view of the four-swingable-wheel push-pull luggage with a pair of rear swingable wheels and a pair of front swingable wheels attached to a pair of triangular neck elements; and,

FIG. 4 is a fragmented enlarged view of the four-swingable-wheel push-pull luggage. 

The ornamental design for a four-swingable-wheel push-pull luggage, as shown and described. 